Additive carrier for spin on filters

Abstract

An additive carrier for a spin-on filter is provided. The additive carrier is positioned at an upstream side of the filter and includes a basket defining an annular body. The annular body includes a concentric opening extending therethrough, a circumferentially extending recess configured to receive and store an additive material and a plurality of flanges extending radially within the recess, the flanges spaced apart in a circumferential direction of the recess to form a plurality of sub-recesses.

What is claimed is: 
     
         1 . An additive carrier for a spin-on filter, the additive carrier comprising:
 a basket defining an annular body, the annular body comprising:   a concentric opening extending therethrough;   a circumferentially extending recess configured to receive and store an additive material; and   a plurality of flanges extending radially within the recess, the flanges spaced apart in a circumferential direction of the recess to form a plurality of sub-recesses.   
     
     
         2 . The additive carrier of  claim 1 , wherein the basket further comprises a frustoconical portion extending circumferentially around the annular body, and an axially extending retaining wall extending around an outer circumference of the annular body, wherein the recess is formed between at least the retaining wall and frustoconical portion. 
     
     
         3 . The additive carrier of  claim 1 , further comprising:
 a retainer positioned on a first surface of the annular body, the retainer comprising:
 a first end; 
 a second end; 
 a bowl shaped section extending between the first end and second end; and 
 an aperture formed in the bowl shaped section; 
   wherein the retainer is positioned relative to a first surface of the annular body such that the aperture is concentric with the opening extending though the annular body.   
     
     
         4 . The additive carrier of  claim 3 , wherein the basket further includes a second surface on an opposite side of the basket from the first surface, and the recess is positioned on the second surface. 
     
     
         5 . The additive carrier of  claim 3 , further comprising:
 an annular shaped lid, the lid comprising:
 a first side; 
 a second side; 
 an opening extending through the lid and positioned concentrically with the lid; and 
   at least one port in the lid configured to allow a fluid to flow from one of the first side or second side to the other of the first side or second side.   
     
     
         6 . The additive carrier of  claim 5 , wherein the at least one port includes a first port positioned at the first side of the lid and a second port positioned at the second side of the lid, the lid further comprising:
 at least one port housing in fluid communication with the first port and the second port, wherein at least a portion of the port housing extends axially from the first side.   
     
     
         7 . The additive carrier of  claim 6 , wherein the first side of the lid includes alternating raised portions and lowered portion along a circumferential direction, the first port opening to one of the lowered portions. 
     
     
         8 . The additive carrier of  claim 1 , wherein the recess is formed between a first annular plate and a second annular plate of the annular body, and opens radially outward. 
     
     
         9 . The additive carrier of  claim 1 , wherein the basket includes a pair of diametrically opposed auxiliary wings positioned along an outer circumference of the annular body, each auxiliary wing including an auxiliary recess configured to receive and store an additive material. 
     
     
         10 . The additive carrier of  claim 1 , wherein the basket includes an axially extending retaining wall extending around an outer circumference of the annular body, the retaining wall including a plurality of axial projections spaced in a circumferential direction of the annular body. 
     
     
         11 . A spin-on filter comprising:
 a support structure including a first end plate at a first end of the structure a second end plate at a second end of the structure, and a central opening formed in and extending though at least the first end plate, the first end of the structure is an upstream end of the spin-on filter;   a filter medium disposed between the first end plate and second end plate in a substantially cylindrical configuration;   a relief valve including a plurality of legs, the relief valve at least partially seated in the central opening; and   an additive carrier positioned at the first end of the support structure, the additive carrier comprising:   a basket in the form of an annular body, the annular body comprising:   a concentric opening extending therethrough;   a circumferentially extending recess configured to receive and store an additive material; and   a plurality of flanges extending radially within the recess, the flanges spaced apart in a circumferential direction of the recess to form a plurality of sub-recesses.   
     
     
         12 . The spin-on filter of  claim 11 , wherein the basket further comprises a frustoconical portion extending circumferentially around the annular body, and an axially extending retaining wall extending around an outer circumference of the annular body, wherein the recess is formed between at least the retaining wall and frustoconical portion. 
     
     
         13 . The additive carrier of  claim 11 , further comprising:
 a retainer positioned on a first surface of the annular body, the retainer comprising:
 a first end; 
 a second end; 
 a bowl shaped section extending between the first end and second end; and 
 an aperture formed in the bowl shaped section; 
   wherein the retainer is positioned relative to a first surface of the annular body such that the aperture is concentric with the opening extending though the annular body and the central opening of the spin-on filter.   
     
     
         14 . The additive carrier of  claim 13 , wherein the basket further includes a second surface on an opposite side of the basket from the first surface, and the recess is positioned on the second surface. 
     
     
         15 . The additive carrier of  claim 13 , further comprising:
 an annular shaped lid, the lid comprising:
 a first side; 
 a second side; 
 an opening extending through the lid and positioned concentrically with the lid; and 
   at least one port in the lid configured to allow a fluid to flow from one of the first side or second side to the other of the first side or second side.   
     
     
         16 . The additive carrier of  claim 15 , wherein the at least one port includes a first port positioned at the first side of the lid and a second port positioned at the second side of the lid, the lid further comprising:
 at least one port housing in fluid communication with the first port and the second port, wherein at least a portion of the port housing extends axially from the first side.   
     
     
         17 . The additive carrier of  claim 16 , wherein the first side of the lid includes alternating raised portions and lowered portion along a circumferential direction, the first port opening to one of the lowered portions. 
     
     
         18 . The additive carrier of  claim 11 , wherein the recess is formed between a first annular plate and a second annular plate of the annular body, and opens radially outward. 
     
     
         19 . The additive carrier of  claim 11 , wherein the basket includes a pair of diametrically opposed auxiliary wings positioned along an outer circumference of the annular body, each auxiliary wing including an auxiliary recess configured to receive and store an additive material. 
     
     
         20 . The additive carrier of  claim 11 , wherein the basket includes an axially extending retaining wall extending around an outer circumference of the annular body, the retaining wall including a plurality of axial projections spaced in a circumferential direction of the annular body.